﻿// MIT License:
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED ""AS IS"", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

using Microsoft.Bot.Schema;
using System.Globalization;
using System.Linq;
using System.Text;

namespace Bot.Builder.Community.Dialogs.FormFlow.Advanced
{
    internal class MessageActivityHelper
    {
        internal static string GetSanitizedTextInput(IMessageActivity activity)
        {
            var text = (activity != null ? activity.Text : null);

            var result = text == null ? "" : text.Trim();
            if (result.StartsWith("\""))
            {
                result = result.Substring(1);
            }
            if (result.EndsWith("\""))
            {
                result = result.Substring(0, result.Length - 1);
            }

            return result;
        }

        internal static IMessageActivity BuildMessageWithText(string text)
        {
            return new Activity
            {
                Type = ActivityTypes.Message,
                Text = text
            };
        }

        internal static string RemoveDiacritics(string text)
        {
            if (string.IsNullOrWhiteSpace(text))
                return text;

            text = text.Normalize(NormalizationForm.FormD);
            var chars = text.Where(c => CharUnicodeInfo.GetUnicodeCategory(c) != UnicodeCategory.NonSpacingMark).ToArray();
            return new string(chars).Normalize(NormalizationForm.FormC);
        }
    }
}
